Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to voluntary nystagmus: Ocular flutter
pendular nystagmus in which the person causes an extremely fine and rapid horizontal oscillation of the eyes. The nystagamus consists of back-to-back saccades and is seldom done for more than a few seconds at a time.
A rare type of pendular nystagmus in those who have learned to oscillate their eyes rapidly, usually by extreme convergence.
See also: nystagmus